Allow LoRaWAN STM32WL driver debug led to be inverted (#14910)

Author: hallard

connectivity/drivers/lora/TARGET_STM32WL/STM32WL_LoRaRadio.cpp

@@ -115,11 +115,11 @@ const float lora_symbol_time[3][6] = {{ 32.768, 16.384, 8.192, 4.096, 2.048, 1.0
 
 
 #ifdef MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_RX
-static DigitalOut _rf_dbg_rx(MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_RX, 0);
+static DigitalOut _rf_dbg_rx(MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_RX, MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_INVERT);
 #endif
 
 #ifdef MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_TX
-static DigitalOut _rf_dbg_tx(MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_TX, 0);
+static DigitalOut _rf_dbg_tx(MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_TX, MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_INVERT);
 #endif
 
 
@@ -302,7 +302,7 @@ void STM32WL_LoRaRadio::HAL_SUBGHZ_TxCpltCallback(void)
 
 #ifdef MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_TX
         /* Reset TX DBG pin */
-        _rf_dbg_tx = 0;
+        _rf_dbg_tx = MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_INVERT;
 #endif
     }
 }
@@ -330,7 +330,7 @@ void STM32WL_LoRaRadio::HAL_SUBGHZ_RxCpltCallback(void)
 
 #ifdef MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_RX
         /* Reset RX DBG pin */
-        _rf_dbg_rx = 0;
+        _rf_dbg_rx = MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_INVERT;
 #endif
     }
 }
@@ -360,15 +360,15 @@ void STM32WL_LoRaRadio::HAL_SUBGHZ_RxTxTimeoutCallback(void)
 
 #if MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_TX
         /* Reset TX DBG pin */
-        _rf_dbg_tx = 0;
+        _rf_dbg_tx = MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_INVERT;
 #endif
 
     } else if ((_radio_events && _radio_events->rx_timeout) && (_operating_mode == MODE_RX)) {
         _radio_events->rx_timeout();
 
 #ifdef MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_RX
         /* Reset RX DBG pin */
-        _rf_dbg_rx = 0;
+        _rf_dbg_rx = MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_INVERT;
 #endif
     }
 }
@@ -1079,7 +1079,7 @@ void STM32WL_LoRaRadio::send(uint8_t *buffer, uint8_t size)
 
 #ifdef MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_TX
     /* Set TX DBG pin */
-    _rf_dbg_tx = 1;
+    _rf_dbg_tx = !MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_INVERT;
 #endif
 
     /* Set RF switch */
@@ -1137,7 +1137,7 @@ void STM32WL_LoRaRadio::receive(void)
 
 #ifdef MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_RX
     /* Set RX DBG pin */
-    _rf_dbg_rx = 1;
+    _rf_dbg_rx = !MBED_CONF_STM32WL_LORA_DRIVER_DEBUG_INVERT;
 #endif
 
     /* RF switch configuration */

connectivity/drivers/lora/TARGET_STM32WL/mbed_lib.json

@@ -47,6 +47,10 @@
         },
         "debug_tx": {
             "help": "GPIO pin for TX debug"
+        },
+        "debug_invert": {
+            "help": "invert levels of the debug_rx and debug_tx pins. Default: 0 standard, 1 invert",
+            "value" : 0
         }
     },
     "target_overrides": {